Misko Hevery 503905c807 feat(ivy): add ngcc ivy switch (#25238)
Provides a runtime and compile time switch for ivy including
`ApplicationRef.bootstrapModule`.

This is done by naming the symbols such that `ngcc` (angular
Compatibility compiler) can rename symbols in such a way that running
`ngcc` command will switch the `@angular/core` module from `legacy` to
`ivy` mode.

This is done as follows:

```
const someToken__PRE_NGCC__ = ‘legacy mode’;
const someToken__POST_NGCC__ = ‘ivy mode’;

export someSymbol = someToken__PRE_NGCC__;
```

The `ngcc` will search for any token which ends with `__PRE_NGCC__`
and replace it with `__POST_NGCC__`. This allows the `@angular/core`
package to be rewritten to ivy mode post `ngcc` execution.

PR Close #25238
2018-08-16 13:51:42 -07:00
2017-01-27 15:03:11 -06:00
2018-08-14 11:58:47 -07:00
2018-07-03 13:32:06 -07:00

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